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Finding the Fourth Proportional to 280,835.80, 421,253.70 and 174,547.60

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Solution

The fourth proportional to 280,835.80, 421,253.70 and 174,547.60 is: 261,821.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,835.80 : 421,253.70 = 174,547.60 : x
  2. Step 2: Convert to fraction form
    280,835.80/421,253.70 = 174,547.60/x
  3. Step 3: Cross multiply
    280,835.80x = 421,253.70 × 174,547.60
  4. Step 4: Simplify right side
    280,835.80x = 73,528,822,326.12
  5. Step 5: Solve for x
    x = 73,528,822,326.12/280,835.80
  6. Step 6: Final answer
    x = 261,821.40

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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.