Home / 210,907.12-291,044.76-115,407.40

Finding the Fourth Proportional to 210,907.12, 291,044.76 and 115,407.40

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Solution

The fourth proportional to 210,907.12, 291,044.76 and 115,407.40 is: 159,258.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,907.12 : 291,044.76 = 115,407.40 : x
  2. Step 2: Convert to fraction form
    210,907.12/291,044.76 = 115,407.40/x
  3. Step 3: Cross multiply
    210,907.12x = 291,044.76 × 115,407.40
  4. Step 4: Simplify right side
    210,907.12x = 33,588,719,035.22
  5. Step 5: Solve for x
    x = 33,588,719,035.22/210,907.12
  6. Step 6: Final answer
    x = 159,258.35

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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.