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Finding the Fourth Proportional to 346,501, 478,171.40 and 187,525

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Solution

The fourth proportional to 346,501, 478,171.40 and 187,525 is: 258,784.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,501 : 478,171.40 = 187,525 : x
  2. Step 2: Convert to fraction form
    346,501/478,171.40 = 187,525/x
  3. Step 3: Cross multiply
    346,501x = 478,171.40 × 187,525
  4. Step 4: Simplify right side
    346,501x = 89,669,091,785
  5. Step 5: Solve for x
    x = 89,669,091,785/346,501
  6. Step 6: Final answer
    x = 258,784.51

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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.