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Finding the Fourth Proportional to 145,853.58, 218,780.37 and 47,357.58

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Solution

The fourth proportional to 145,853.58, 218,780.37 and 47,357.58 is: 71,036.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,853.58 : 218,780.37 = 47,357.58 : x
  2. Step 2: Convert to fraction form
    145,853.58/218,780.37 = 47,357.58/x
  3. Step 3: Cross multiply
    145,853.58x = 218,780.37 × 47,357.58
  4. Step 4: Simplify right side
    145,853.58x = 10,360,908,874.70
  5. Step 5: Solve for x
    x = 10,360,908,874.70/145,853.58
  6. Step 6: Final answer
    x = 71,036.37

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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.