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Finding the Fourth Proportional to 328,974.40, 493,477.80 and 171,510.40

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Solution

The fourth proportional to 328,974.40, 493,477.80 and 171,510.40 is: 257,274.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,974.40 : 493,477.80 = 171,510.40 : x
  2. Step 2: Convert to fraction form
    328,974.40/493,477.80 = 171,510.40/x
  3. Step 3: Cross multiply
    328,974.40x = 493,477.80 × 171,510.40
  4. Step 4: Simplify right side
    328,974.40x = 84,636,574,869.12
  5. Step 5: Solve for x
    x = 84,636,574,869.12/328,974.40
  6. Step 6: Final answer
    x = 257,274.05

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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.