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Finding the Fourth Proportional to 424,641.60, 636,962.40 and 171,921.60

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Solution

The fourth proportional to 424,641.60, 636,962.40 and 171,921.60 is: 257,882.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,641.60 : 636,962.40 = 171,921.60 : x
  2. Step 2: Convert to fraction form
    424,641.60/636,962.40 = 171,921.60/x
  3. Step 3: Cross multiply
    424,641.60x = 636,962.40 × 171,921.60
  4. Step 4: Simplify right side
    424,641.60x = 109,507,594,947.84
  5. Step 5: Solve for x
    x = 109,507,594,947.84/424,641.60
  6. Step 6: Final answer
    x = 257,882.40

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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.