Home / 438,438.30-657,657.45-122,948.70

Finding the Fourth Proportional to 438,438.30, 657,657.45 and 122,948.70

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Solution

The fourth proportional to 438,438.30, 657,657.45 and 122,948.70 is: 184,423.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,438.30 : 657,657.45 = 122,948.70 : x
  2. Step 2: Convert to fraction form
    438,438.30/657,657.45 = 122,948.70/x
  3. Step 3: Cross multiply
    438,438.30x = 657,657.45 × 122,948.70
  4. Step 4: Simplify right side
    438,438.30x = 80,858,128,522.82
  5. Step 5: Solve for x
    x = 80,858,128,522.82/438,438.30
  6. Step 6: Final answer
    x = 184,423.05

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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.