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Finding the Fourth Proportional to 342,130.20, 512,612.10 and 282,643.80

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Solution

The fourth proportional to 342,130.20, 512,612.10 and 282,643.80 is: 423,483.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,130.20 : 512,612.10 = 282,643.80 : x
  2. Step 2: Convert to fraction form
    342,130.20/512,612.10 = 282,643.80/x
  3. Step 3: Cross multiply
    342,130.20x = 512,612.10 × 282,643.80
  4. Step 4: Simplify right side
    342,130.20x = 144,886,631,869.98
  5. Step 5: Solve for x
    x = 144,886,631,869.98/342,130.20
  6. Step 6: Final answer
    x = 423,483.90

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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.