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Finding the Fourth Proportional to 556,772.10, 768,347.61 and 302,123.28

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Solution

The fourth proportional to 556,772.10, 768,347.61 and 302,123.28 is: 416,931.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,772.10 : 768,347.61 = 302,123.28 : x
  2. Step 2: Convert to fraction form
    556,772.10/768,347.61 = 302,123.28/x
  3. Step 3: Cross multiply
    556,772.10x = 768,347.61 × 302,123.28
  4. Step 4: Simplify right side
    556,772.10x = 232,135,700,113.36
  5. Step 5: Solve for x
    x = 232,135,700,113.36/556,772.10
  6. Step 6: Final answer
    x = 416,931.27

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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.