Home / 289,681.40-434,522.45-79,321.16

Finding the Fourth Proportional to 289,681.40, 434,522.45 and 79,321.16

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Solution

The fourth proportional to 289,681.40, 434,522.45 and 79,321.16 is: 118,981.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,681.40 : 434,522.45 = 79,321.16 : x
  2. Step 2: Convert to fraction form
    289,681.40/434,522.45 = 79,321.16/x
  3. Step 3: Cross multiply
    289,681.40x = 434,522.45 × 79,321.16
  4. Step 4: Simplify right side
    289,681.40x = 34,466,822,805.73
  5. Step 5: Solve for x
    x = 34,466,822,805.73/289,681.40
  6. Step 6: Final answer
    x = 118,981.83

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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.