Home / 287,784,220.40-431,676,330.60-201,619,919.60

Finding the Fourth Proportional to 287,784,220.40, 431,676,330.60 and 201,619,919.60

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Solution

The fourth proportional to 287,784,220.40, 431,676,330.60 and 201,619,919.60 is: 302,429,879.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,784,220.40 : 431,676,330.60 = 201,619,919.60 : x
  2. Step 2: Convert to fraction form
    287,784,220.40/431,676,330.60 = 201,619,919.60/x
  3. Step 3: Cross multiply
    287,784,220.40x = 431,676,330.60 × 201,619,919.60
  4. Step 4: Simplify right side
    287,784,220.40x = 87,034,547,068,795,024
  5. Step 5: Solve for x
    x = 87,034,547,068,795,024/287,784,220.40
  6. Step 6: Final answer
    x = 302,429,879.40

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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.