Home / 278,330.10-417,495.15-100,842.90

Finding the Fourth Proportional to 278,330.10, 417,495.15 and 100,842.90

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Solution

The fourth proportional to 278,330.10, 417,495.15 and 100,842.90 is: 151,264.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,330.10 : 417,495.15 = 100,842.90 : x
  2. Step 2: Convert to fraction form
    278,330.10/417,495.15 = 100,842.90/x
  3. Step 3: Cross multiply
    278,330.10x = 417,495.15 × 100,842.90
  4. Step 4: Simplify right side
    278,330.10x = 42,101,421,661.94
  5. Step 5: Solve for x
    x = 42,101,421,661.94/278,330.10
  6. Step 6: Final answer
    x = 151,264.35

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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.