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Finding the Fourth Proportional to 328,547.20, 492,705.60 and 170,723.20

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Solution

The fourth proportional to 328,547.20, 492,705.60 and 170,723.20 is: 256,024.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,547.20 : 492,705.60 = 170,723.20 : x
  2. Step 2: Convert to fraction form
    328,547.20/492,705.60 = 170,723.20/x
  3. Step 3: Cross multiply
    328,547.20x = 492,705.60 × 170,723.20
  4. Step 4: Simplify right side
    328,547.20x = 84,116,276,689.92
  5. Step 5: Solve for x
    x = 84,116,276,689.92/328,547.20
  6. Step 6: Final answer
    x = 256,024.94

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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.