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Finding the Fourth Proportional to 390,525.02, 585,672.70 and 165,883.67

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Solution

The fourth proportional to 390,525.02, 585,672.70 and 165,883.67 is: 248,776.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,525.02 : 585,672.70 = 165,883.67 : x
  2. Step 2: Convert to fraction form
    390,525.02/585,672.70 = 165,883.67/x
  3. Step 3: Cross multiply
    390,525.02x = 585,672.70 × 165,883.67
  4. Step 4: Simplify right side
    390,525.02x = 97,153,536,894.81
  5. Step 5: Solve for x
    x = 97,153,536,894.81/390,525.02
  6. Step 6: Final answer
    x = 248,776.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.