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Finding the Fourth Proportional to 230,999.16, 318,775.47 and 129,026.07

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Solution

The fourth proportional to 230,999.16, 318,775.47 and 129,026.07 is: 178,054.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,999.16 : 318,775.47 = 129,026.07 : x
  2. Step 2: Convert to fraction form
    230,999.16/318,775.47 = 129,026.07/x
  3. Step 3: Cross multiply
    230,999.16x = 318,775.47 × 129,026.07
  4. Step 4: Simplify right side
    230,999.16x = 41,130,346,106.50
  5. Step 5: Solve for x
    x = 41,130,346,106.50/230,999.16
  6. Step 6: Final answer
    x = 178,054.09

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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.