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Finding the Fourth Proportional to 279,381.96, 385,547.09 and 152,058.47

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Solution

The fourth proportional to 279,381.96, 385,547.09 and 152,058.47 is: 209,840.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,381.96 : 385,547.09 = 152,058.47 : x
  2. Step 2: Convert to fraction form
    279,381.96/385,547.09 = 152,058.47/x
  3. Step 3: Cross multiply
    279,381.96x = 385,547.09 × 152,058.47
  4. Step 4: Simplify right side
    279,381.96x = 58,625,697,930.32
  5. Step 5: Solve for x
    x = 58,625,697,930.32/279,381.96
  6. Step 6: Final answer
    x = 209,840.67

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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.