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Finding the Fourth Proportional to 286,448.52, 395,301.66 and 157,389.69

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Solution

The fourth proportional to 286,448.52, 395,301.66 and 157,389.69 is: 217,199.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,448.52 : 395,301.66 = 157,389.69 : x
  2. Step 2: Convert to fraction form
    286,448.52/395,301.66 = 157,389.69/x
  3. Step 3: Cross multiply
    286,448.52x = 395,301.66 × 157,389.69
  4. Step 4: Simplify right side
    286,448.52x = 62,216,405,723.89
  5. Step 5: Solve for x
    x = 62,216,405,723.89/286,448.52
  6. Step 6: Final answer
    x = 217,199.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.