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Finding the Fourth Proportional to 304,048.40, 456,031.20 and 79,426.40

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Solution

The fourth proportional to 304,048.40, 456,031.20 and 79,426.40 is: 119,128.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,048.40 : 456,031.20 = 79,426.40 : x
  2. Step 2: Convert to fraction form
    304,048.40/456,031.20 = 79,426.40/x
  3. Step 3: Cross multiply
    304,048.40x = 456,031.20 × 79,426.40
  4. Step 4: Simplify right side
    304,048.40x = 36,220,916,503.68
  5. Step 5: Solve for x
    x = 36,220,916,503.68/304,048.40
  6. Step 6: Final answer
    x = 119,128.79

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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.