Home / 280,024.60-420,036.90-102,537.40

Finding the Fourth Proportional to 280,024.60, 420,036.90 and 102,537.40

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Solution

The fourth proportional to 280,024.60, 420,036.90 and 102,537.40 is: 153,806.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,024.60 : 420,036.90 = 102,537.40 : x
  2. Step 2: Convert to fraction form
    280,024.60/420,036.90 = 102,537.40/x
  3. Step 3: Cross multiply
    280,024.60x = 420,036.90 × 102,537.40
  4. Step 4: Simplify right side
    280,024.60x = 43,069,491,630.06
  5. Step 5: Solve for x
    x = 43,069,491,630.06/280,024.60
  6. Step 6: Final answer
    x = 153,806.10

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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.