Home / 459,061.20-688,656.60-143,485.20

Finding the Fourth Proportional to 459,061.20, 688,656.60 and 143,485.20

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Solution

The fourth proportional to 459,061.20, 688,656.60 and 143,485.20 is: 215,248.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,061.20 : 688,656.60 = 143,485.20 : x
  2. Step 2: Convert to fraction form
    459,061.20/688,656.60 = 143,485.20/x
  3. Step 3: Cross multiply
    459,061.20x = 688,656.60 × 143,485.20
  4. Step 4: Simplify right side
    459,061.20x = 98,812,029,982.32
  5. Step 5: Solve for x
    x = 98,812,029,982.32/459,061.20
  6. Step 6: Final answer
    x = 215,248.05

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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.