Home / 400,924.17-553,275.32-239,779.21

Finding the Fourth Proportional to 400,924.17, 553,275.32 and 239,779.21

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Solution

The fourth proportional to 400,924.17, 553,275.32 and 239,779.21 is: 330,895.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,924.17 : 553,275.32 = 239,779.21 : x
  2. Step 2: Convert to fraction form
    400,924.17/553,275.32 = 239,779.21/x
  3. Step 3: Cross multiply
    400,924.17x = 553,275.32 × 239,779.21
  4. Step 4: Simplify right side
    400,924.17x = 132,663,919,142.10
  5. Step 5: Solve for x
    x = 132,663,919,142.10/400,924.17
  6. Step 6: Final answer
    x = 330,895.29

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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.