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Finding the Fourth Proportional to 356,688, 534,908.16 and 103,900.32

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Solution

The fourth proportional to 356,688, 534,908.16 and 103,900.32 is: 155,814.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,688 : 534,908.16 = 103,900.32 : x
  2. Step 2: Convert to fraction form
    356,688/534,908.16 = 103,900.32/x
  3. Step 3: Cross multiply
    356,688x = 534,908.16 × 103,900.32
  4. Step 4: Simplify right side
    356,688x = 55,577,128,994.61
  5. Step 5: Solve for x
    x = 55,577,128,994.61/356,688
  6. Step 6: Final answer
    x = 155,814.41

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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.