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Finding the Fourth Proportional to 288,000.80, 432,001.20 and 268,317.80

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Solution

The fourth proportional to 288,000.80, 432,001.20 and 268,317.80 is: 402,476.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,000.80 : 432,001.20 = 268,317.80 : x
  2. Step 2: Convert to fraction form
    288,000.80/432,001.20 = 268,317.80/x
  3. Step 3: Cross multiply
    288,000.80x = 432,001.20 × 268,317.80
  4. Step 4: Simplify right side
    288,000.80x = 115,913,611,581.36
  5. Step 5: Solve for x
    x = 115,913,611,581.36/288,000.80
  6. Step 6: Final answer
    x = 402,476.70

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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.