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Finding the Fourth Proportional to 370,218.79, 510,520.08 and 316,681.03

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Solution

The fourth proportional to 370,218.79, 510,520.08 and 316,681.03 is: 436,693.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,218.79 : 510,520.08 = 316,681.03 : x
  2. Step 2: Convert to fraction form
    370,218.79/510,520.08 = 316,681.03/x
  3. Step 3: Cross multiply
    370,218.79x = 510,520.08 × 316,681.03
  4. Step 4: Simplify right side
    370,218.79x = 161,672,024,770.08
  5. Step 5: Solve for x
    x = 161,672,024,770.08/370,218.79
  6. Step 6: Final answer
    x = 436,693.19

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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.