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Finding the Fourth Proportional to 302,812.70, 455,203.20 and 259,510.10

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Solution

The fourth proportional to 302,812.70, 455,203.20 and 259,510.10 is: 390,108.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,812.70 : 455,203.20 = 259,510.10 : x
  2. Step 2: Convert to fraction form
    302,812.70/455,203.20 = 259,510.10/x
  3. Step 3: Cross multiply
    302,812.70x = 455,203.20 × 259,510.10
  4. Step 4: Simplify right side
    302,812.70x = 118,129,827,952.32
  5. Step 5: Solve for x
    x = 118,129,827,952.32/302,812.70
  6. Step 6: Final answer
    x = 390,108.57

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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.