Home / 443,521.15-665,042.03-139,858.02

Finding the Fourth Proportional to 443,521.15, 665,042.03 and 139,858.02

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Solution

The fourth proportional to 443,521.15, 665,042.03 and 139,858.02 is: 209,711.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,521.15 : 665,042.03 = 139,858.02 : x
  2. Step 2: Convert to fraction form
    443,521.15/665,042.03 = 139,858.02/x
  3. Step 3: Cross multiply
    443,521.15x = 665,042.03 × 139,858.02
  4. Step 4: Simplify right side
    443,521.15x = 93,011,461,357.76
  5. Step 5: Solve for x
    x = 93,011,461,357.76/443,521.15
  6. Step 6: Final answer
    x = 209,711.45

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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.