Home / 423,445.22-584,279-239,682.90

Finding the Fourth Proportional to 423,445.22, 584,279 and 239,682.90

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Solution

The fourth proportional to 423,445.22, 584,279 and 239,682.90 is: 330,719.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,445.22 : 584,279 = 239,682.90 : x
  2. Step 2: Convert to fraction form
    423,445.22/584,279 = 239,682.90/x
  3. Step 3: Cross multiply
    423,445.22x = 584,279 × 239,682.90
  4. Step 4: Simplify right side
    423,445.22x = 140,041,685,129.10
  5. Step 5: Solve for x
    x = 140,041,685,129.10/423,445.22
  6. Step 6: Final answer
    x = 330,719.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.