Home / 485,112,145.60-727,668,218.40-193,835,238.40

Finding the Fourth Proportional to 485,112,145.60, 727,668,218.40 and 193,835,238.40

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Solution

The fourth proportional to 485,112,145.60, 727,668,218.40 and 193,835,238.40 is: 290,752,857.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,112,145.60 : 727,668,218.40 = 193,835,238.40 : x
  2. Step 2: Convert to fraction form
    485,112,145.60/727,668,218.40 = 193,835,238.40/x
  3. Step 3: Cross multiply
    485,112,145.60x = 727,668,218.40 × 193,835,238.40
  4. Step 4: Simplify right side
    485,112,145.60x = 141,047,742,589,667,264
  5. Step 5: Solve for x
    x = 141,047,742,589,667,264/485,112,145.60
  6. Step 6: Final answer
    x = 290,752,857.60

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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.