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Finding the Fourth Proportional to 475,130.55, 655,154.75 and 302,775.51

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Solution

The fourth proportional to 475,130.55, 655,154.75 and 302,775.51 is: 417,495.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,130.55 : 655,154.75 = 302,775.51 : x
  2. Step 2: Convert to fraction form
    475,130.55/655,154.75 = 302,775.51/x
  3. Step 3: Cross multiply
    475,130.55x = 655,154.75 × 302,775.51
  4. Step 4: Simplify right side
    475,130.55x = 198,364,812,046.30
  5. Step 5: Solve for x
    x = 198,364,812,046.30/475,130.55
  6. Step 6: Final answer
    x = 417,495.39

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1.5x scale

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.