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Finding the Fourth Proportional to 472,191.57, 651,624.86 and 257,331.81

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Solution

The fourth proportional to 472,191.57, 651,624.86 and 257,331.81 is: 355,118.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,191.57 : 651,624.86 = 257,331.81 : x
  2. Step 2: Convert to fraction form
    472,191.57/651,624.86 = 257,331.81/x
  3. Step 3: Cross multiply
    472,191.57x = 651,624.86 × 257,331.81
  4. Step 4: Simplify right side
    472,191.57x = 167,683,801,406.67
  5. Step 5: Solve for x
    x = 167,683,801,406.67/472,191.57
  6. Step 6: Final answer
    x = 355,118.16

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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.