Home / 390,723.32-539,281.92-254,514.22

Finding the Fourth Proportional to 390,723.32, 539,281.92 and 254,514.22

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Solution

The fourth proportional to 390,723.32, 539,281.92 and 254,514.22 is: 351,284.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,723.32 : 539,281.92 = 254,514.22 : x
  2. Step 2: Convert to fraction form
    390,723.32/539,281.92 = 254,514.22/x
  3. Step 3: Cross multiply
    390,723.32x = 539,281.92 × 254,514.22
  4. Step 4: Simplify right side
    390,723.32x = 137,254,918,436.94
  5. Step 5: Solve for x
    x = 137,254,918,436.94/390,723.32
  6. Step 6: Final answer
    x = 351,284.18

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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.