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Finding the Fourth Proportional to 205,017.80, 307,526.70 and 149,030.60

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Solution

The fourth proportional to 205,017.80, 307,526.70 and 149,030.60 is: 223,545.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,017.80 : 307,526.70 = 149,030.60 : x
  2. Step 2: Convert to fraction form
    205,017.80/307,526.70 = 149,030.60/x
  3. Step 3: Cross multiply
    205,017.80x = 307,526.70 × 149,030.60
  4. Step 4: Simplify right side
    205,017.80x = 45,830,888,617.02
  5. Step 5: Solve for x
    x = 45,830,888,617.02/205,017.80
  6. Step 6: Final answer
    x = 223,545.90

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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.