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Finding the Fourth Proportional to 571,187.70, 788,270.40 and 316,533.42

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Solution

The fourth proportional to 571,187.70, 788,270.40 and 316,533.42 is: 436,833.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,187.70 : 788,270.40 = 316,533.42 : x
  2. Step 2: Convert to fraction form
    571,187.70/788,270.40 = 316,533.42/x
  3. Step 3: Cross multiply
    571,187.70x = 788,270.40 × 316,533.42
  4. Step 4: Simplify right side
    571,187.70x = 249,513,925,596.77
  5. Step 5: Solve for x
    x = 249,513,925,596.77/571,187.70
  6. Step 6: Final answer
    x = 436,833.51

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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.