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Finding the Fourth Proportional to 458,331.30, 687,496.95 and 340,233.30

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Solution

The fourth proportional to 458,331.30, 687,496.95 and 340,233.30 is: 510,349.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,331.30 : 687,496.95 = 340,233.30 : x
  2. Step 2: Convert to fraction form
    458,331.30/687,496.95 = 340,233.30/x
  3. Step 3: Cross multiply
    458,331.30x = 687,496.95 × 340,233.30
  4. Step 4: Simplify right side
    458,331.30x = 233,909,356,038.44
  5. Step 5: Solve for x
    x = 233,909,356,038.44/458,331.30
  6. Step 6: Final answer
    x = 510,349.95

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.