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Finding the Fourth Proportional to 279,641.16, 385,910.73 and 152,316.45

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Solution

The fourth proportional to 279,641.16, 385,910.73 and 152,316.45 is: 210,199.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,641.16 : 385,910.73 = 152,316.45 : x
  2. Step 2: Convert to fraction form
    279,641.16/385,910.73 = 152,316.45/x
  3. Step 3: Cross multiply
    279,641.16x = 385,910.73 × 152,316.45
  4. Step 4: Simplify right side
    279,641.16x = 58,780,552,410.51
  5. Step 5: Solve for x
    x = 58,780,552,410.51/279,641.16
  6. Step 6: Final answer
    x = 210,199.93

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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.