Home / 438,547.20-657,820.80-228,595.20

Finding the Fourth Proportional to 438,547.20, 657,820.80 and 228,595.20

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Solution

The fourth proportional to 438,547.20, 657,820.80 and 228,595.20 is: 342,892.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,547.20 : 657,820.80 = 228,595.20 : x
  2. Step 2: Convert to fraction form
    438,547.20/657,820.80 = 228,595.20/x
  3. Step 3: Cross multiply
    438,547.20x = 657,820.80 × 228,595.20
  4. Step 4: Simplify right side
    438,547.20x = 150,374,677,340.16
  5. Step 5: Solve for x
    x = 150,374,677,340.16/438,547.20
  6. Step 6: Final answer
    x = 342,892.80

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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.