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Finding the Fourth Proportional to 571,149.30, 788,211.62 and 316,484.08

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Solution

The fourth proportional to 571,149.30, 788,211.62 and 316,484.08 is: 436,762.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,149.30 : 788,211.62 = 316,484.08 : x
  2. Step 2: Convert to fraction form
    571,149.30/788,211.62 = 316,484.08/x
  3. Step 3: Cross multiply
    571,149.30x = 788,211.62 × 316,484.08
  4. Step 4: Simplify right side
    571,149.30x = 249,456,427,818.59
  5. Step 5: Solve for x
    x = 249,456,427,818.59/571,149.30
  6. Step 6: Final answer
    x = 436,762.21

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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.