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Finding the Fourth Proportional to 312,547.76, 469,129.66 and 222,690.28

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Solution

The fourth proportional to 312,547.76, 469,129.66 and 222,690.28 is: 334,254.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,547.76 : 469,129.66 = 222,690.28 : x
  2. Step 2: Convert to fraction form
    312,547.76/469,129.66 = 222,690.28/x
  3. Step 3: Cross multiply
    312,547.76x = 469,129.66 × 222,690.28
  4. Step 4: Simplify right side
    312,547.76x = 104,470,615,341.71
  5. Step 5: Solve for x
    x = 104,470,615,341.71/312,547.76
  6. Step 6: Final answer
    x = 334,254.88

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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.