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Finding the Fourth Proportional to 258,505.56, 356,740.20 and 157,903.56

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Solution

The fourth proportional to 258,505.56, 356,740.20 and 157,903.56 is: 217,908.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,505.56 : 356,740.20 = 157,903.56 : x
  2. Step 2: Convert to fraction form
    258,505.56/356,740.20 = 157,903.56/x
  3. Step 3: Cross multiply
    258,505.56x = 356,740.20 × 157,903.56
  4. Step 4: Simplify right side
    258,505.56x = 56,330,547,575.11
  5. Step 5: Solve for x
    x = 56,330,547,575.11/258,505.56
  6. Step 6: Final answer
    x = 217,908.46

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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.