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Finding the Fourth Proportional to 289,901.40, 435,068.10 and 149,587.80

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Solution

The fourth proportional to 289,901.40, 435,068.10 and 149,587.80 is: 224,493.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,901.40 : 435,068.10 = 149,587.80 : x
  2. Step 2: Convert to fraction form
    289,901.40/435,068.10 = 149,587.80/x
  3. Step 3: Cross multiply
    289,901.40x = 435,068.10 × 149,587.80
  4. Step 4: Simplify right side
    289,901.40x = 65,080,879,929.18
  5. Step 5: Solve for x
    x = 65,080,879,929.18/289,901.40
  6. Step 6: Final answer
    x = 224,493.16

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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.