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Finding the Fourth Proportional to 353,686.20, 529,751.70 and 307,030.20

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Solution

The fourth proportional to 353,686.20, 529,751.70 and 307,030.20 is: 459,870.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,686.20 : 529,751.70 = 307,030.20 : x
  2. Step 2: Convert to fraction form
    353,686.20/529,751.70 = 307,030.20/x
  3. Step 3: Cross multiply
    353,686.20x = 529,751.70 × 307,030.20
  4. Step 4: Simplify right side
    353,686.20x = 162,649,770,401.34
  5. Step 5: Solve for x
    x = 162,649,770,401.34/353,686.20
  6. Step 6: Final answer
    x = 459,870.28

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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.