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Finding the Fourth Proportional to 289,508.34, 434,262.69 and 79,130.46

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Solution

The fourth proportional to 289,508.34, 434,262.69 and 79,130.46 is: 118,695.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,508.34 : 434,262.69 = 79,130.46 : x
  2. Step 2: Convert to fraction form
    289,508.34/434,262.69 = 79,130.46/x
  3. Step 3: Cross multiply
    289,508.34x = 434,262.69 × 79,130.46
  4. Step 4: Simplify right side
    289,508.34x = 34,363,406,420.54
  5. Step 5: Solve for x
    x = 34,363,406,420.54/289,508.34
  6. Step 6: Final answer
    x = 118,695.74

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1.5x scale

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.