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Finding the Fourth Proportional to 472,050.90, 651,437.70 and 257,190.87

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Solution

The fourth proportional to 472,050.90, 651,437.70 and 257,190.87 is: 354,927.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,050.90 : 651,437.70 = 257,190.87 : x
  2. Step 2: Convert to fraction form
    472,050.90/651,437.70 = 257,190.87/x
  3. Step 3: Cross multiply
    472,050.90x = 651,437.70 × 257,190.87
  4. Step 4: Simplify right side
    472,050.90x = 167,543,828,813.80
  5. Step 5: Solve for x
    x = 167,543,828,813.80/472,050.90
  6. Step 6: Final answer
    x = 354,927.46

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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.