Home / 390,031.27-585,262.79-190,353.31

Finding the Fourth Proportional to 390,031.27, 585,262.79 and 190,353.31

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Solution

The fourth proportional to 390,031.27, 585,262.79 and 190,353.31 is: 285,635.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,031.27 : 585,262.79 = 190,353.31 : x
  2. Step 2: Convert to fraction form
    390,031.27/585,262.79 = 190,353.31/x
  3. Step 3: Cross multiply
    390,031.27x = 585,262.79 × 190,353.31
  4. Step 4: Simplify right side
    390,031.27x = 111,406,708,344.57
  5. Step 5: Solve for x
    x = 111,406,708,344.57/390,031.27
  6. Step 6: Final answer
    x = 285,635.32

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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.