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Finding the Fourth Proportional to 341,298.90, 512,030.77 and 128,068.56

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Solution

The fourth proportional to 341,298.90, 512,030.77 and 128,068.56 is: 192,133.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,298.90 : 512,030.77 = 128,068.56 : x
  2. Step 2: Convert to fraction form
    341,298.90/512,030.77 = 128,068.56/x
  3. Step 3: Cross multiply
    341,298.90x = 512,030.77 × 128,068.56
  4. Step 4: Simplify right side
    341,298.90x = 65,575,043,069.42
  5. Step 5: Solve for x
    x = 65,575,043,069.42/341,298.90
  6. Step 6: Final answer
    x = 192,133.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.