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Finding the Fourth Proportional to 570,013.60, 855,020.40 and 219,805.60

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Solution

The fourth proportional to 570,013.60, 855,020.40 and 219,805.60 is: 329,708.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,013.60 : 855,020.40 = 219,805.60 : x
  2. Step 2: Convert to fraction form
    570,013.60/855,020.40 = 219,805.60/x
  3. Step 3: Cross multiply
    570,013.60x = 855,020.40 × 219,805.60
  4. Step 4: Simplify right side
    570,013.60x = 187,938,272,034.24
  5. Step 5: Solve for x
    x = 187,938,272,034.24/570,013.60
  6. Step 6: Final answer
    x = 329,708.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.