Home / 261,984,692.40-393,012,030.60-89,418,145.20

Finding the Fourth Proportional to 261,984,692.40, 393,012,030.60 and 89,418,145.20

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Solution

The fourth proportional to 261,984,692.40, 393,012,030.60 and 89,418,145.20 is: 134,139,160.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,984,692.40 : 393,012,030.60 = 89,418,145.20 : x
  2. Step 2: Convert to fraction form
    261,984,692.40/393,012,030.60 = 89,418,145.20/x
  3. Step 3: Cross multiply
    261,984,692.40x = 393,012,030.60 × 89,418,145.20
  4. Step 4: Simplify right side
    261,984,692.40x = 35,142,406,817,537,648
  5. Step 5: Solve for x
    x = 35,142,406,817,537,648/261,984,692.40
  6. Step 6: Final answer
    x = 134,139,160.94

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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.