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Finding the Fourth Proportional to 329,901.81, 455,029.65 and 302,765.55

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Solution

The fourth proportional to 329,901.81, 455,029.65 and 302,765.55 is: 417,600.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,901.81 : 455,029.65 = 302,765.55 : x
  2. Step 2: Convert to fraction form
    329,901.81/455,029.65 = 302,765.55/x
  3. Step 3: Cross multiply
    329,901.81x = 455,029.65 × 302,765.55
  4. Step 4: Simplify right side
    329,901.81x = 137,767,300,542.20
  5. Step 5: Solve for x
    x = 137,767,300,542.20/329,901.81
  6. Step 6: Final answer
    x = 417,600.92

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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.