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Finding the Fourth Proportional to 342,803.37, 473,012.40 and 215,388.75

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Solution

The fourth proportional to 342,803.37, 473,012.40 and 215,388.75 is: 297,201.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,803.37 : 473,012.40 = 215,388.75 : x
  2. Step 2: Convert to fraction form
    342,803.37/473,012.40 = 215,388.75/x
  3. Step 3: Cross multiply
    342,803.37x = 473,012.40 × 215,388.75
  4. Step 4: Simplify right side
    342,803.37x = 101,881,549,570.50
  5. Step 5: Solve for x
    x = 101,881,549,570.50/342,803.37
  6. Step 6: Final answer
    x = 297,201.13

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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.