Home / 390,503.03-585,844.65-165,870.72

Finding the Fourth Proportional to 390,503.03, 585,844.65 and 165,870.72

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Solution

The fourth proportional to 390,503.03, 585,844.65 and 165,870.72 is: 248,844.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,503.03 : 585,844.65 = 165,870.72 : x
  2. Step 2: Convert to fraction form
    390,503.03/585,844.65 = 165,870.72/x
  3. Step 3: Cross multiply
    390,503.03x = 585,844.65 × 165,870.72
  4. Step 4: Simplify right side
    390,503.03x = 97,174,473,903.65
  5. Step 5: Solve for x
    x = 97,174,473,903.65/390,503.03
  6. Step 6: Final answer
    x = 248,844.36

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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.