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Finding the Fourth Proportional to 280,024.80, 420,037.20 and 146,853.60

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Solution

The fourth proportional to 280,024.80, 420,037.20 and 146,853.60 is: 220,280.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,024.80 : 420,037.20 = 146,853.60 : x
  2. Step 2: Convert to fraction form
    280,024.80/420,037.20 = 146,853.60/x
  3. Step 3: Cross multiply
    280,024.80x = 420,037.20 × 146,853.60
  4. Step 4: Simplify right side
    280,024.80x = 61,683,974,953.92
  5. Step 5: Solve for x
    x = 61,683,974,953.92/280,024.80
  6. Step 6: Final answer
    x = 220,280.40

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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.