Home / 458,158.20-687,302.10-142,582.20

Finding the Fourth Proportional to 458,158.20, 687,302.10 and 142,582.20

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Solution

The fourth proportional to 458,158.20, 687,302.10 and 142,582.20 is: 213,893.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,158.20 : 687,302.10 = 142,582.20 : x
  2. Step 2: Convert to fraction form
    458,158.20/687,302.10 = 142,582.20/x
  3. Step 3: Cross multiply
    458,158.20x = 687,302.10 × 142,582.20
  4. Step 4: Simplify right side
    458,158.20x = 97,997,045,482.62
  5. Step 5: Solve for x
    x = 97,997,045,482.62/458,158.20
  6. Step 6: Final answer
    x = 213,893.47

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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.