Home / 280,101,421.80-420,152,132.70-178,316,692.20

Finding the Fourth Proportional to 280,101,421.80, 420,152,132.70 and 178,316,692.20

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Solution

The fourth proportional to 280,101,421.80, 420,152,132.70 and 178,316,692.20 is: 267,475,038.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,101,421.80 : 420,152,132.70 = 178,316,692.20 : x
  2. Step 2: Convert to fraction form
    280,101,421.80/420,152,132.70 = 178,316,692.20/x
  3. Step 3: Cross multiply
    280,101,421.80x = 420,152,132.70 × 178,316,692.20
  4. Step 4: Simplify right side
    280,101,421.80x = 74,920,138,523,839,440
  5. Step 5: Solve for x
    x = 74,920,138,523,839,440/280,101,421.80
  6. Step 6: Final answer
    x = 267,475,038.30

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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.