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Finding the Fourth Proportional to 354,698.40, 532,047.60 and 291,712.80

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Solution

The fourth proportional to 354,698.40, 532,047.60 and 291,712.80 is: 437,569.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,698.40 : 532,047.60 = 291,712.80 : x
  2. Step 2: Convert to fraction form
    354,698.40/532,047.60 = 291,712.80/x
  3. Step 3: Cross multiply
    354,698.40x = 532,047.60 × 291,712.80
  4. Step 4: Simplify right side
    354,698.40x = 155,205,095,129.28
  5. Step 5: Solve for x
    x = 155,205,095,129.28/354,698.40
  6. Step 6: Final answer
    x = 437,569.20

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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.