Home / 243,138,666.40-364,707,999.60-72,937,578.40

Finding the Fourth Proportional to 243,138,666.40, 364,707,999.60 and 72,937,578.40

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Solution

The fourth proportional to 243,138,666.40, 364,707,999.60 and 72,937,578.40 is: 109,406,367.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,138,666.40 : 364,707,999.60 = 72,937,578.40 : x
  2. Step 2: Convert to fraction form
    243,138,666.40/364,707,999.60 = 72,937,578.40/x
  3. Step 3: Cross multiply
    243,138,666.40x = 364,707,999.60 × 72,937,578.40
  4. Step 4: Simplify right side
    243,138,666.40x = 26,600,918,313,932,172
  5. Step 5: Solve for x
    x = 26,600,918,313,932,172/243,138,666.40
  6. Step 6: Final answer
    x = 109,406,367.60

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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.