Home / 210,888.40-291,032.52-115,399.12

Finding the Fourth Proportional to 210,888.40, 291,032.52 and 115,399.12

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Solution

The fourth proportional to 210,888.40, 291,032.52 and 115,399.12 is: 159,254.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,888.40 : 291,032.52 = 115,399.12 : x
  2. Step 2: Convert to fraction form
    210,888.40/291,032.52 = 115,399.12/x
  3. Step 3: Cross multiply
    210,888.40x = 291,032.52 × 115,399.12
  4. Step 4: Simplify right side
    210,888.40x = 33,584,896,699.38
  5. Step 5: Solve for x
    x = 33,584,896,699.38/210,888.40
  6. Step 6: Final answer
    x = 159,254.36

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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.