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Finding the Fourth Proportional to 288,243.17, 432,627.15 and 153,420.45

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Solution

The fourth proportional to 288,243.17, 432,627.15 and 153,420.45 is: 230,270.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,243.17 : 432,627.15 = 153,420.45 : x
  2. Step 2: Convert to fraction form
    288,243.17/432,627.15 = 153,420.45/x
  3. Step 3: Cross multiply
    288,243.17x = 432,627.15 × 153,420.45
  4. Step 4: Simplify right side
    288,243.17x = 66,373,852,035.22
  5. Step 5: Solve for x
    x = 66,373,852,035.22/288,243.17
  6. Step 6: Final answer
    x = 230,270.34

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1.5x scale

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.