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Finding the Fourth Proportional to 279,477.95, 385,686.51 and 152,160.53

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Solution

The fourth proportional to 279,477.95, 385,686.51 and 152,160.53 is: 209,985.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,477.95 : 385,686.51 = 152,160.53 : x
  2. Step 2: Convert to fraction form
    279,477.95/385,686.51 = 152,160.53/x
  3. Step 3: Cross multiply
    279,477.95x = 385,686.51 × 152,160.53
  4. Step 4: Simplify right side
    279,477.95x = 58,686,263,775.45
  5. Step 5: Solve for x
    x = 58,686,263,775.45/279,477.95
  6. Step 6: Final answer
    x = 209,985.31

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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.