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Finding the Fourth Proportional to 280,542.96, 420,817.80 and 93,554.40

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Solution

The fourth proportional to 280,542.96, 420,817.80 and 93,554.40 is: 140,332.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,542.96 : 420,817.80 = 93,554.40 : x
  2. Step 2: Convert to fraction form
    280,542.96/420,817.80 = 93,554.40/x
  3. Step 3: Cross multiply
    280,542.96x = 420,817.80 × 93,554.40
  4. Step 4: Simplify right side
    280,542.96x = 39,369,356,788.32
  5. Step 5: Solve for x
    x = 39,369,356,788.32/280,542.96
  6. Step 6: Final answer
    x = 140,332.72

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1.5x scale

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.