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Finding the Fourth Proportional to 402,681.60, 604,411.20 and 245,217.60

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Solution

The fourth proportional to 402,681.60, 604,411.20 and 245,217.60 is: 368,063.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,681.60 : 604,411.20 = 245,217.60 : x
  2. Step 2: Convert to fraction form
    402,681.60/604,411.20 = 245,217.60/x
  3. Step 3: Cross multiply
    402,681.60x = 604,411.20 × 245,217.60
  4. Step 4: Simplify right side
    402,681.60x = 148,212,263,877.12
  5. Step 5: Solve for x
    x = 148,212,263,877.12/402,681.60
  6. Step 6: Final answer
    x = 368,063.16

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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.