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Finding the Fourth Proportional to 343,280.16, 515,027.72 and 153,899.32

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Solution

The fourth proportional to 343,280.16, 515,027.72 and 153,899.32 is: 230,897.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,280.16 : 515,027.72 = 153,899.32 : x
  2. Step 2: Convert to fraction form
    343,280.16/515,027.72 = 153,899.32/x
  3. Step 3: Cross multiply
    343,280.16x = 515,027.72 × 153,899.32
  4. Step 4: Simplify right side
    343,280.16x = 79,262,415,889.15
  5. Step 5: Solve for x
    x = 79,262,415,889.15/343,280.16
  6. Step 6: Final answer
    x = 230,897.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.