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Finding the Fourth Proportional to 291,864.66, 434,895.50 and 260,030.04

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Solution

The fourth proportional to 291,864.66, 434,895.50 and 260,030.04 is: 387,460.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,864.66 : 434,895.50 = 260,030.04 : x
  2. Step 2: Convert to fraction form
    291,864.66/434,895.50 = 260,030.04/x
  3. Step 3: Cross multiply
    291,864.66x = 434,895.50 × 260,030.04
  4. Step 4: Simplify right side
    291,864.66x = 113,085,892,960.67
  5. Step 5: Solve for x
    x = 113,085,892,960.67/291,864.66
  6. Step 6: Final answer
    x = 387,460.04

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.