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Finding the Fourth Proportional to 279,477.96, 385,686.51 and 152,160.54

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Solution

The fourth proportional to 279,477.96, 385,686.51 and 152,160.54 is: 209,985.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,477.96 : 385,686.51 = 152,160.54 : x
  2. Step 2: Convert to fraction form
    279,477.96/385,686.51 = 152,160.54/x
  3. Step 3: Cross multiply
    279,477.96x = 385,686.51 × 152,160.54
  4. Step 4: Simplify right side
    279,477.96x = 58,686,267,632.32
  5. Step 5: Solve for x
    x = 58,686,267,632.32/279,477.96
  6. Step 6: Final answer
    x = 209,985.32

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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.