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Finding the Fourth Proportional to 288,995.80, 433,526.10 and 89,314.60

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Solution

The fourth proportional to 288,995.80, 433,526.10 and 89,314.60 is: 133,981.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,995.80 : 433,526.10 = 89,314.60 : x
  2. Step 2: Convert to fraction form
    288,995.80/433,526.10 = 89,314.60/x
  3. Step 3: Cross multiply
    288,995.80x = 433,526.10 × 89,314.60
  4. Step 4: Simplify right side
    288,995.80x = 38,720,210,211.06
  5. Step 5: Solve for x
    x = 38,720,210,211.06/288,995.80
  6. Step 6: Final answer
    x = 133,981.91

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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.