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Finding the Fourth Proportional to 331,401.76, 457,330.32 and 180,498.40

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Solution

The fourth proportional to 331,401.76, 457,330.32 and 180,498.40 is: 249,085.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,401.76 : 457,330.32 = 180,498.40 : x
  2. Step 2: Convert to fraction form
    331,401.76/457,330.32 = 180,498.40/x
  3. Step 3: Cross multiply
    331,401.76x = 457,330.32 × 180,498.40
  4. Step 4: Simplify right side
    331,401.76x = 82,547,391,031.49
  5. Step 5: Solve for x
    x = 82,547,391,031.49/331,401.76
  6. Step 6: Final answer
    x = 249,085.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.