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Finding the Fourth Proportional to 438,655.50, 605,345.40 and 237,451.50

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Solution

The fourth proportional to 438,655.50, 605,345.40 and 237,451.50 is: 327,683.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,655.50 : 605,345.40 = 237,451.50 : x
  2. Step 2: Convert to fraction form
    438,655.50/605,345.40 = 237,451.50/x
  3. Step 3: Cross multiply
    438,655.50x = 605,345.40 × 237,451.50
  4. Step 4: Simplify right side
    438,655.50x = 143,740,173,248.10
  5. Step 5: Solve for x
    x = 143,740,173,248.10/438,655.50
  6. Step 6: Final answer
    x = 327,683.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.