Home / 261,357.02-391,731.78-118,988.18

Finding the Fourth Proportional to 261,357.02, 391,731.78 and 118,988.18

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Solution

The fourth proportional to 261,357.02, 391,731.78 and 118,988.18 is: 178,343.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,357.02 : 391,731.78 = 118,988.18 : x
  2. Step 2: Convert to fraction form
    261,357.02/391,731.78 = 118,988.18/x
  3. Step 3: Cross multiply
    261,357.02x = 391,731.78 × 118,988.18
  4. Step 4: Simplify right side
    261,357.02x = 46,611,451,550.36
  5. Step 5: Solve for x
    x = 46,611,451,550.36/261,357.02
  6. Step 6: Final answer
    x = 178,343.98

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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.