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Finding the Fourth Proportional to 328,047.70, 492,071.55 and 117,658.30

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Solution

The fourth proportional to 328,047.70, 492,071.55 and 117,658.30 is: 176,487.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,047.70 : 492,071.55 = 117,658.30 : x
  2. Step 2: Convert to fraction form
    328,047.70/492,071.55 = 117,658.30/x
  3. Step 3: Cross multiply
    328,047.70x = 492,071.55 × 117,658.30
  4. Step 4: Simplify right side
    328,047.70x = 57,896,302,051.37
  5. Step 5: Solve for x
    x = 57,896,302,051.37/328,047.70
  6. Step 6: Final answer
    x = 176,487.45

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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.