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Finding the Fourth Proportional to 556,931.06, 768,544.30 and 302,276.78

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Solution

The fourth proportional to 556,931.06, 768,544.30 and 302,276.78 is: 417,130.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,931.06 : 768,544.30 = 302,276.78 : x
  2. Step 2: Convert to fraction form
    556,931.06/768,544.30 = 302,276.78/x
  3. Step 3: Cross multiply
    556,931.06x = 768,544.30 × 302,276.78
  4. Step 4: Simplify right side
    556,931.06x = 232,313,096,291.35
  5. Step 5: Solve for x
    x = 232,313,096,291.35/556,931.06
  6. Step 6: Final answer
    x = 417,130.80

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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.