Home / 328,985.20-493,477.80-118,644.40

Finding the Fourth Proportional to 328,985.20, 493,477.80 and 118,644.40

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Solution

The fourth proportional to 328,985.20, 493,477.80 and 118,644.40 is: 177,966.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,985.20 : 493,477.80 = 118,644.40 : x
  2. Step 2: Convert to fraction form
    328,985.20/493,477.80 = 118,644.40/x
  3. Step 3: Cross multiply
    328,985.20x = 493,477.80 × 118,644.40
  4. Step 4: Simplify right side
    328,985.20x = 58,548,377,494.32
  5. Step 5: Solve for x
    x = 58,548,377,494.32/328,985.20
  6. Step 6: Final answer
    x = 177,966.60

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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.