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Finding the Fourth Proportional to 283,242.65, 390,883.67 and 154,189.72

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Solution

The fourth proportional to 283,242.65, 390,883.67 and 154,189.72 is: 212,786.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,242.65 : 390,883.67 = 154,189.72 : x
  2. Step 2: Convert to fraction form
    283,242.65/390,883.67 = 154,189.72/x
  3. Step 3: Cross multiply
    283,242.65x = 390,883.67 × 154,189.72
  4. Step 4: Simplify right side
    283,242.65x = 60,270,241,881.71
  5. Step 5: Solve for x
    x = 60,270,241,881.71/283,242.65
  6. Step 6: Final answer
    x = 212,786.60

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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.