Home / 278,617,692.40-417,926,538.60-74,166,434.80

Finding the Fourth Proportional to 278,617,692.40, 417,926,538.60 and 74,166,434.80

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Solution

The fourth proportional to 278,617,692.40, 417,926,538.60 and 74,166,434.80 is: 111,249,652.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,617,692.40 : 417,926,538.60 = 74,166,434.80 : x
  2. Step 2: Convert to fraction form
    278,617,692.40/417,926,538.60 = 74,166,434.80/x
  3. Step 3: Cross multiply
    278,617,692.40x = 417,926,538.60 × 74,166,434.80
  4. Step 4: Simplify right side
    278,617,692.40x = 30,996,121,376,266,584
  5. Step 5: Solve for x
    x = 30,996,121,376,266,584/278,617,692.40
  6. Step 6: Final answer
    x = 111,249,652.20

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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.