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Finding the Fourth Proportional to 472,219.46, 651,643.88 and 257,354.91

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Solution

The fourth proportional to 472,219.46, 651,643.88 and 257,354.91 is: 355,139.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,219.46 : 651,643.88 = 257,354.91 : x
  2. Step 2: Convert to fraction form
    472,219.46/651,643.88 = 257,354.91/x
  3. Step 3: Cross multiply
    472,219.46x = 651,643.88 × 257,354.91
  4. Step 4: Simplify right side
    472,219.46x = 167,703,752,732.84
  5. Step 5: Solve for x
    x = 167,703,752,732.84/472,219.46
  6. Step 6: Final answer
    x = 355,139.43

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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.