Home / 438,136.90-657,205.35-288,546.10

Finding the Fourth Proportional to 438,136.90, 657,205.35 and 288,546.10

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Solution

The fourth proportional to 438,136.90, 657,205.35 and 288,546.10 is: 432,819.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,136.90 : 657,205.35 = 288,546.10 : x
  2. Step 2: Convert to fraction form
    438,136.90/657,205.35 = 288,546.10/x
  3. Step 3: Cross multiply
    438,136.90x = 657,205.35 × 288,546.10
  4. Step 4: Simplify right side
    438,136.90x = 189,634,040,641.64
  5. Step 5: Solve for x
    x = 189,634,040,641.64/438,136.90
  6. Step 6: Final answer
    x = 432,819.15

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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.