Home / 438,434.40-657,651.60-172,106.40

Finding the Fourth Proportional to 438,434.40, 657,651.60 and 172,106.40

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Solution

The fourth proportional to 438,434.40, 657,651.60 and 172,106.40 is: 258,159.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,434.40 : 657,651.60 = 172,106.40 : x
  2. Step 2: Convert to fraction form
    438,434.40/657,651.60 = 172,106.40/x
  3. Step 3: Cross multiply
    438,434.40x = 657,651.60 × 172,106.40
  4. Step 4: Simplify right side
    438,434.40x = 113,186,049,330.24
  5. Step 5: Solve for x
    x = 113,186,049,330.24/438,434.40
  6. Step 6: Final answer
    x = 258,159.60

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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.