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Finding the Fourth Proportional to 346,851.48, 478,709.82 and 210,928.08

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Solution

The fourth proportional to 346,851.48, 478,709.82 and 210,928.08 is: 291,114.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,851.48 : 478,709.82 = 210,928.08 : x
  2. Step 2: Convert to fraction form
    346,851.48/478,709.82 = 210,928.08/x
  3. Step 3: Cross multiply
    346,851.48x = 478,709.82 × 210,928.08
  4. Step 4: Simplify right side
    346,851.48x = 100,973,343,209.75
  5. Step 5: Solve for x
    x = 100,973,343,209.75/346,851.48
  6. Step 6: Final answer
    x = 291,114.06

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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.