Home / 242,637,986.40-363,956,979.60-78,875,426.40

Finding the Fourth Proportional to 242,637,986.40, 363,956,979.60 and 78,875,426.40

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Solution

The fourth proportional to 242,637,986.40, 363,956,979.60 and 78,875,426.40 is: 118,313,139.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,637,986.40 : 363,956,979.60 = 78,875,426.40 : x
  2. Step 2: Convert to fraction form
    242,637,986.40/363,956,979.60 = 78,875,426.40/x
  3. Step 3: Cross multiply
    242,637,986.40x = 363,956,979.60 × 78,875,426.40
  4. Step 4: Simplify right side
    242,637,986.40x = 28,707,261,957,206,104
  5. Step 5: Solve for x
    x = 28,707,261,957,206,104/242,637,986.40
  6. Step 6: Final answer
    x = 118,313,139.60

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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.