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Finding the Fourth Proportional to 172,365.20, 258,547.80 and 47,706.20

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Solution

The fourth proportional to 172,365.20, 258,547.80 and 47,706.20 is: 71,559.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,365.20 : 258,547.80 = 47,706.20 : x
  2. Step 2: Convert to fraction form
    172,365.20/258,547.80 = 47,706.20/x
  3. Step 3: Cross multiply
    172,365.20x = 258,547.80 × 47,706.20
  4. Step 4: Simplify right side
    172,365.20x = 12,334,333,056.36
  5. Step 5: Solve for x
    x = 12,334,333,056.36/172,365.20
  6. Step 6: Final answer
    x = 71,559.30

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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.