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Finding the Fourth Proportional to 343,412.40, 515,118.60 and 291,572.40

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Solution

The fourth proportional to 343,412.40, 515,118.60 and 291,572.40 is: 437,358.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,412.40 : 515,118.60 = 291,572.40 : x
  2. Step 2: Convert to fraction form
    343,412.40/515,118.60 = 291,572.40/x
  3. Step 3: Cross multiply
    343,412.40x = 515,118.60 × 291,572.40
  4. Step 4: Simplify right side
    343,412.40x = 150,194,366,486.64
  5. Step 5: Solve for x
    x = 150,194,366,486.64/343,412.40
  6. Step 6: Final answer
    x = 437,358.60

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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.