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Finding the Fourth Proportional to 556,880.31, 768,490.29 and 302,231.55

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Solution

The fourth proportional to 556,880.31, 768,490.29 and 302,231.55 is: 417,077.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,880.31 : 768,490.29 = 302,231.55 : x
  2. Step 2: Convert to fraction form
    556,880.31/768,490.29 = 302,231.55/x
  3. Step 3: Cross multiply
    556,880.31x = 768,490.29 × 302,231.55
  4. Step 4: Simplify right side
    556,880.31x = 232,262,011,506.65
  5. Step 5: Solve for x
    x = 232,262,011,506.65/556,880.31
  6. Step 6: Final answer
    x = 417,077.08

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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.