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Finding the Fourth Proportional to 172,368.30, 258,552.45 and 162,000.30

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Solution

The fourth proportional to 172,368.30, 258,552.45 and 162,000.30 is: 243,000.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,368.30 : 258,552.45 = 162,000.30 : x
  2. Step 2: Convert to fraction form
    172,368.30/258,552.45 = 162,000.30/x
  3. Step 3: Cross multiply
    172,368.30x = 258,552.45 × 162,000.30
  4. Step 4: Simplify right side
    172,368.30x = 41,885,574,465.74
  5. Step 5: Solve for x
    x = 41,885,574,465.74/172,368.30
  6. Step 6: Final answer
    x = 243,000.45

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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.