Home / 390,299,988-585,462,112.56-144,717,733.92

Finding the Fourth Proportional to 390,299,988, 585,462,112.56 and 144,717,733.92

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Solution

The fourth proportional to 390,299,988, 585,462,112.56 and 144,717,733.92 is: 217,081,098.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,299,988 : 585,462,112.56 = 144,717,733.92 : x
  2. Step 2: Convert to fraction form
    390,299,988/585,462,112.56 = 144,717,733.92/x
  3. Step 3: Cross multiply
    390,299,988x = 585,462,112.56 × 144,717,733.92
  4. Step 4: Simplify right side
    390,299,988x = 84,726,750,225,699,152
  5. Step 5: Solve for x
    x = 84,726,750,225,699,152/390,299,988
  6. Step 6: Final answer
    x = 217,081,098.72

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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.