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Finding the Fourth Proportional to 288,738.10, 433,117.05 and 89,056.90

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Solution

The fourth proportional to 288,738.10, 433,117.05 and 89,056.90 is: 133,588.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,738.10 : 433,117.05 = 89,056.90 : x
  2. Step 2: Convert to fraction form
    288,738.10/433,117.05 = 89,056.90/x
  3. Step 3: Cross multiply
    288,738.10x = 433,117.05 × 89,056.90
  4. Step 4: Simplify right side
    288,738.10x = 38,572,061,810.15
  5. Step 5: Solve for x
    x = 38,572,061,810.15/288,738.10
  6. Step 6: Final answer
    x = 133,588.40

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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.