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Finding the Fourth Proportional to 346,468.79, 478,113.44 and 217,476.56

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Solution

The fourth proportional to 346,468.79, 478,113.44 and 217,476.56 is: 300,109.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,468.79 : 478,113.44 = 217,476.56 : x
  2. Step 2: Convert to fraction form
    346,468.79/478,113.44 = 217,476.56/x
  3. Step 3: Cross multiply
    346,468.79x = 478,113.44 × 217,476.56
  4. Step 4: Simplify right side
    346,468.79x = 103,978,466,328.87
  5. Step 5: Solve for x
    x = 103,978,466,328.87/346,468.79
  6. Step 6: Final answer
    x = 300,109.18

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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.