Home / 286,011,218.80-429,016,828.20-78,749,228.80

Finding the Fourth Proportional to 286,011,218.80, 429,016,828.20 and 78,749,228.80

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Solution

The fourth proportional to 286,011,218.80, 429,016,828.20 and 78,749,228.80 is: 118,123,843.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,011,218.80 : 429,016,828.20 = 78,749,228.80 : x
  2. Step 2: Convert to fraction form
    286,011,218.80/429,016,828.20 = 78,749,228.80/x
  3. Step 3: Cross multiply
    286,011,218.80x = 429,016,828.20 × 78,749,228.80
  4. Step 4: Simplify right side
    286,011,218.80x = 33,784,744,362,972,088
  5. Step 5: Solve for x
    x = 33,784,744,362,972,088/286,011,218.80
  6. Step 6: Final answer
    x = 118,123,843.20

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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.