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Finding the Fourth Proportional to 571,188.70, 788,271.78 and 316,534.42

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Solution

The fourth proportional to 571,188.70, 788,271.78 and 316,534.42 is: 436,834.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,188.70 : 788,271.78 = 316,534.42 : x
  2. Step 2: Convert to fraction form
    571,188.70/788,271.78 = 316,534.42/x
  3. Step 3: Cross multiply
    571,188.70x = 788,271.78 × 316,534.42
  4. Step 4: Simplify right side
    571,188.70x = 249,515,150,684.67
  5. Step 5: Solve for x
    x = 249,515,150,684.67/571,188.70
  6. Step 6: Final answer
    x = 436,834.89

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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.