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Finding the Fourth Proportional to 373,947, 516,040.40 and 212,798.72

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Solution

The fourth proportional to 373,947, 516,040.40 and 212,798.72 is: 293,658.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,947 : 516,040.40 = 212,798.72 : x
  2. Step 2: Convert to fraction form
    373,947/516,040.40 = 212,798.72/x
  3. Step 3: Cross multiply
    373,947x = 516,040.40 × 212,798.72
  4. Step 4: Simplify right side
    373,947x = 109,812,736,588.29
  5. Step 5: Solve for x
    x = 109,812,736,588.29/373,947
  6. Step 6: Final answer
    x = 293,658.56

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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.