Home / 280,187,271.80-420,280,907.70-178,402,542.20

Finding the Fourth Proportional to 280,187,271.80, 420,280,907.70 and 178,402,542.20

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Solution

The fourth proportional to 280,187,271.80, 420,280,907.70 and 178,402,542.20 is: 267,603,813.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,187,271.80 : 420,280,907.70 = 178,402,542.20 : x
  2. Step 2: Convert to fraction form
    280,187,271.80/420,280,907.70 = 178,402,542.20/x
  3. Step 3: Cross multiply
    280,187,271.80x = 420,280,907.70 × 178,402,542.20
  4. Step 4: Simplify right side
    280,187,271.80x = 74,979,182,371,803,552
  5. Step 5: Solve for x
    x = 74,979,182,371,803,552/280,187,271.80
  6. Step 6: Final answer
    x = 267,603,813.30

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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.