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Finding the Fourth Proportional to 472,015.55, 651,379.51 and 257,154.95

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Solution

The fourth proportional to 472,015.55, 651,379.51 and 257,154.95 is: 354,872.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,015.55 : 651,379.51 = 257,154.95 : x
  2. Step 2: Convert to fraction form
    472,015.55/651,379.51 = 257,154.95/x
  3. Step 3: Cross multiply
    472,015.55x = 651,379.51 × 257,154.95
  4. Step 4: Simplify right side
    472,015.55x = 167,505,465,325.08
  5. Step 5: Solve for x
    x = 167,505,465,325.08/472,015.55
  6. Step 6: Final answer
    x = 354,872.77

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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.