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Finding the Fourth Proportional to 245,215.53, 367,820.93 and 145,303.81

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Solution

The fourth proportional to 245,215.53, 367,820.93 and 145,303.81 is: 217,954.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,215.53 : 367,820.93 = 145,303.81 : x
  2. Step 2: Convert to fraction form
    245,215.53/367,820.93 = 145,303.81/x
  3. Step 3: Cross multiply
    245,215.53x = 367,820.93 × 145,303.81
  4. Step 4: Simplify right side
    245,215.53x = 53,445,781,970.45
  5. Step 5: Solve for x
    x = 53,445,781,970.45/245,215.53
  6. Step 6: Final answer
    x = 217,954.31

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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.