Home / 429,981.16-645,252.66-163,744.24

Finding the Fourth Proportional to 429,981.16, 645,252.66 and 163,744.24

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Solution

The fourth proportional to 429,981.16, 645,252.66 and 163,744.24 is: 245,723.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,981.16 : 645,252.66 = 163,744.24 : x
  2. Step 2: Convert to fraction form
    429,981.16/645,252.66 = 163,744.24/x
  3. Step 3: Cross multiply
    429,981.16x = 645,252.66 × 163,744.24
  4. Step 4: Simplify right side
    429,981.16x = 105,656,406,419.68
  5. Step 5: Solve for x
    x = 105,656,406,419.68/429,981.16
  6. Step 6: Final answer
    x = 245,723.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.