Home / 402,816.23-555,875.29-221,528.15

Finding the Fourth Proportional to 402,816.23, 555,875.29 and 221,528.15

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Solution

The fourth proportional to 402,816.23, 555,875.29 and 221,528.15 is: 305,702.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,816.23 : 555,875.29 = 221,528.15 : x
  2. Step 2: Convert to fraction form
    402,816.23/555,875.29 = 221,528.15/x
  3. Step 3: Cross multiply
    402,816.23x = 555,875.29 × 221,528.15
  4. Step 4: Simplify right side
    402,816.23x = 123,142,027,333.28
  5. Step 5: Solve for x
    x = 123,142,027,333.28/402,816.23
  6. Step 6: Final answer
    x = 305,702.75

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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.