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Finding the Fourth Proportional to 330,574.80, 495,862.20 and 307,246.80

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Solution

The fourth proportional to 330,574.80, 495,862.20 and 307,246.80 is: 460,870.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,574.80 : 495,862.20 = 307,246.80 : x
  2. Step 2: Convert to fraction form
    330,574.80/495,862.20 = 307,246.80/x
  3. Step 3: Cross multiply
    330,574.80x = 495,862.20 × 307,246.80
  4. Step 4: Simplify right side
    330,574.80x = 152,352,074,190.96
  5. Step 5: Solve for x
    x = 152,352,074,190.96/330,574.80
  6. Step 6: Final answer
    x = 460,870.20

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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.