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Finding the Fourth Proportional to 403,455.76, 556,581.92 and 260,261.93

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Solution

The fourth proportional to 403,455.76, 556,581.92 and 260,261.93 is: 359,040.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,455.76 : 556,581.92 = 260,261.93 : x
  2. Step 2: Convert to fraction form
    403,455.76/556,581.92 = 260,261.93/x
  3. Step 3: Cross multiply
    403,455.76x = 556,581.92 × 260,261.93
  4. Step 4: Simplify right side
    403,455.76x = 144,857,084,792.45
  5. Step 5: Solve for x
    x = 144,857,084,792.45/403,455.76
  6. Step 6: Final answer
    x = 359,040.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.