Home / 272,711.10-409,139.55-243,332.40

Finding the Fourth Proportional to 272,711.10, 409,139.55 and 243,332.40

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Solution

The fourth proportional to 272,711.10, 409,139.55 and 243,332.40 is: 365,063.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,711.10 : 409,139.55 = 243,332.40 : x
  2. Step 2: Convert to fraction form
    272,711.10/409,139.55 = 243,332.40/x
  3. Step 3: Cross multiply
    272,711.10x = 409,139.55 × 243,332.40
  4. Step 4: Simplify right side
    272,711.10x = 99,556,908,636.42
  5. Step 5: Solve for x
    x = 99,556,908,636.42/272,711.10
  6. Step 6: Final answer
    x = 365,063.65

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1.5x scale

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.