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Finding the Fourth Proportional to 302,942.60, 454,413.90 and 103,488.20

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Solution

The fourth proportional to 302,942.60, 454,413.90 and 103,488.20 is: 155,232.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,942.60 : 454,413.90 = 103,488.20 : x
  2. Step 2: Convert to fraction form
    302,942.60/454,413.90 = 103,488.20/x
  3. Step 3: Cross multiply
    302,942.60x = 454,413.90 × 103,488.20
  4. Step 4: Simplify right side
    302,942.60x = 47,026,476,565.98
  5. Step 5: Solve for x
    x = 47,026,476,565.98/302,942.60
  6. Step 6: Final answer
    x = 155,232.30

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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.