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Finding the Fourth Proportional to 346,815, 478,643.58 and 195,921.72

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Solution

The fourth proportional to 346,815, 478,643.58 and 195,921.72 is: 270,393.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,815 : 478,643.58 = 195,921.72 : x
  2. Step 2: Convert to fraction form
    346,815/478,643.58 = 195,921.72/x
  3. Step 3: Cross multiply
    346,815x = 478,643.58 × 195,921.72
  4. Step 4: Simplify right side
    346,815x = 93,776,673,460.56
  5. Step 5: Solve for x
    x = 93,776,673,460.56/346,815
  6. Step 6: Final answer
    x = 270,393.94

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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.