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Finding the Fourth Proportional to 288,001.55, 402,269.05 and 288,001.55

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Solution

The fourth proportional to 288,001.55, 402,269.05 and 288,001.55 is: 402,269.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,001.55 : 402,269.05 = 288,001.55 : x
  2. Step 2: Convert to fraction form
    288,001.55/402,269.05 = 288,001.55/x
  3. Step 3: Cross multiply
    288,001.55x = 402,269.05 × 288,001.55
  4. Step 4: Simplify right side
    288,001.55x = 115,854,109,917.03
  5. Step 5: Solve for x
    x = 115,854,109,917.03/288,001.55
  6. Step 6: Final answer
    x = 402,269.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.