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Finding the Fourth Proportional to 472,012.80, 651,375.72 and 257,152.20

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Solution

The fourth proportional to 472,012.80, 651,375.72 and 257,152.20 is: 354,868.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,012.80 : 651,375.72 = 257,152.20 : x
  2. Step 2: Convert to fraction form
    472,012.80/651,375.72 = 257,152.20/x
  3. Step 3: Cross multiply
    472,012.80x = 651,375.72 × 257,152.20
  4. Step 4: Simplify right side
    472,012.80x = 167,502,699,424.58
  5. Step 5: Solve for x
    x = 167,502,699,424.58/472,012.80
  6. Step 6: Final answer
    x = 354,868.98

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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.