Home / 280,404,737.80-420,607,106.70-159,472,385.80

Finding the Fourth Proportional to 280,404,737.80, 420,607,106.70 and 159,472,385.80

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Solution

The fourth proportional to 280,404,737.80, 420,607,106.70 and 159,472,385.80 is: 239,208,578.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,404,737.80 : 420,607,106.70 = 159,472,385.80 : x
  2. Step 2: Convert to fraction form
    280,404,737.80/420,607,106.70 = 159,472,385.80/x
  3. Step 3: Cross multiply
    280,404,737.80x = 420,607,106.70 × 159,472,385.80
  4. Step 4: Simplify right side
    280,404,737.80x = 67,075,218,789,884,168
  5. Step 5: Solve for x
    x = 67,075,218,789,884,168/280,404,737.80
  6. Step 6: Final answer
    x = 239,208,578.70

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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.