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Finding the Fourth Proportional to 245,886.60, 368,570.70 and 140,478.60

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Solution

The fourth proportional to 245,886.60, 368,570.70 and 140,478.60 is: 210,569.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,886.60 : 368,570.70 = 140,478.60 : x
  2. Step 2: Convert to fraction form
    245,886.60/368,570.70 = 140,478.60/x
  3. Step 3: Cross multiply
    245,886.60x = 368,570.70 × 140,478.60
  4. Step 4: Simplify right side
    245,886.60x = 51,776,295,937.02
  5. Step 5: Solve for x
    x = 51,776,295,937.02/245,886.60
  6. Step 6: Final answer
    x = 210,569.82

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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.