Home / 402,384.40-555,287.72-221,098.24

Finding the Fourth Proportional to 402,384.40, 555,287.72 and 221,098.24

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Solution

The fourth proportional to 402,384.40, 555,287.72 and 221,098.24 is: 305,114.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,384.40 : 555,287.72 = 221,098.24 : x
  2. Step 2: Convert to fraction form
    402,384.40/555,287.72 = 221,098.24/x
  3. Step 3: Cross multiply
    402,384.40x = 555,287.72 × 221,098.24
  4. Step 4: Simplify right side
    402,384.40x = 122,773,137,585.61
  5. Step 5: Solve for x
    x = 122,773,137,585.61/402,384.40
  6. Step 6: Final answer
    x = 305,114.06

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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.