Home / 287,784,257.40-431,676,386.10-201,619,956.60

Finding the Fourth Proportional to 287,784,257.40, 431,676,386.10 and 201,619,956.60

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Solution

The fourth proportional to 287,784,257.40, 431,676,386.10 and 201,619,956.60 is: 302,429,934.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,784,257.40 : 431,676,386.10 = 201,619,956.60 : x
  2. Step 2: Convert to fraction form
    287,784,257.40/431,676,386.10 = 201,619,956.60/x
  3. Step 3: Cross multiply
    287,784,257.40x = 431,676,386.10 × 201,619,956.60
  4. Step 4: Simplify right side
    287,784,257.40x = 87,034,574,230,726,848
  5. Step 5: Solve for x
    x = 87,034,574,230,726,848/287,784,257.40
  6. Step 6: Final answer
    x = 302,429,934.90

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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.