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Finding the Fourth Proportional to 380,948.40, 572,740.20 and 356,281.20

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Solution

The fourth proportional to 380,948.40, 572,740.20 and 356,281.20 is: 535,654.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,948.40 : 572,740.20 = 356,281.20 : x
  2. Step 2: Convert to fraction form
    380,948.40/572,740.20 = 356,281.20/x
  3. Step 3: Cross multiply
    380,948.40x = 572,740.20 × 356,281.20
  4. Step 4: Simplify right side
    380,948.40x = 204,056,565,744.24
  5. Step 5: Solve for x
    x = 204,056,565,744.24/380,948.40
  6. Step 6: Final answer
    x = 535,654.08

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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.