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Finding the Fourth Proportional to 372,559.52, 513,152.70 and 286,353.66

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Solution

The fourth proportional to 372,559.52, 513,152.70 and 286,353.66 is: 394,415.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,559.52 : 513,152.70 = 286,353.66 : x
  2. Step 2: Convert to fraction form
    372,559.52/513,152.70 = 286,353.66/x
  3. Step 3: Cross multiply
    372,559.52x = 513,152.70 × 286,353.66
  4. Step 4: Simplify right side
    372,559.52x = 146,943,153,783.88
  5. Step 5: Solve for x
    x = 146,943,153,783.88/372,559.52
  6. Step 6: Final answer
    x = 394,415.24

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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.