Home / 369,976.80-554,965.20-258,002.40

Finding the Fourth Proportional to 369,976.80, 554,965.20 and 258,002.40

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Solution

The fourth proportional to 369,976.80, 554,965.20 and 258,002.40 is: 387,003.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,976.80 : 554,965.20 = 258,002.40 : x
  2. Step 2: Convert to fraction form
    369,976.80/554,965.20 = 258,002.40/x
  3. Step 3: Cross multiply
    369,976.80x = 554,965.20 × 258,002.40
  4. Step 4: Simplify right side
    369,976.80x = 143,182,353,516.48
  5. Step 5: Solve for x
    x = 143,182,353,516.48/369,976.80
  6. Step 6: Final answer
    x = 387,003.60

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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.