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Finding the Fourth Proportional to 370,947.80, 556,421.70 and 356,432.60

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Solution

The fourth proportional to 370,947.80, 556,421.70 and 356,432.60 is: 534,648.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,947.80 : 556,421.70 = 356,432.60 : x
  2. Step 2: Convert to fraction form
    370,947.80/556,421.70 = 356,432.60/x
  3. Step 3: Cross multiply
    370,947.80x = 556,421.70 × 356,432.60
  4. Step 4: Simplify right side
    370,947.80x = 198,326,833,227.42
  5. Step 5: Solve for x
    x = 198,326,833,227.42/370,947.80
  6. Step 6: Final answer
    x = 534,648.90

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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.