Home / 478,020.51-716,863.59-140,971.68

Finding the Fourth Proportional to 478,020.51, 716,863.59 and 140,971.68

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Solution

The fourth proportional to 478,020.51, 716,863.59 and 140,971.68 is: 211,408.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,020.51 : 716,863.59 = 140,971.68 : x
  2. Step 2: Convert to fraction form
    478,020.51/716,863.59 = 140,971.68/x
  3. Step 3: Cross multiply
    478,020.51x = 716,863.59 × 140,971.68
  4. Step 4: Simplify right side
    478,020.51x = 101,057,464,613.13
  5. Step 5: Solve for x
    x = 101,057,464,613.13/478,020.51
  6. Step 6: Final answer
    x = 211,408.22

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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.