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Finding the Fourth Proportional to 458,672.20, 688,008.30 and 143,088.10

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Solution

The fourth proportional to 458,672.20, 688,008.30 and 143,088.10 is: 214,632.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,672.20 : 688,008.30 = 143,088.10 : x
  2. Step 2: Convert to fraction form
    458,672.20/688,008.30 = 143,088.10/x
  3. Step 3: Cross multiply
    458,672.20x = 688,008.30 × 143,088.10
  4. Step 4: Simplify right side
    458,672.20x = 98,445,800,431.23
  5. Step 5: Solve for x
    x = 98,445,800,431.23/458,672.20
  6. Step 6: Final answer
    x = 214,632.15

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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.