Home / 289,281.27-433,838.13-86,869.21

Finding the Fourth Proportional to 289,281.27, 433,838.13 and 86,869.21

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Solution

The fourth proportional to 289,281.27, 433,838.13 and 86,869.21 is: 130,278.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,281.27 : 433,838.13 = 86,869.21 : x
  2. Step 2: Convert to fraction form
    289,281.27/433,838.13 = 86,869.21/x
  3. Step 3: Cross multiply
    289,281.27x = 433,838.13 × 86,869.21
  4. Step 4: Simplify right side
    289,281.27x = 37,687,175,024.07
  5. Step 5: Solve for x
    x = 37,687,175,024.07/289,281.27
  6. Step 6: Final answer
    x = 130,278.65

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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.