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Finding the Fourth Proportional to 555,017.16, 765,923.68 and 300,368.28

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Solution

The fourth proportional to 555,017.16, 765,923.68 and 300,368.28 is: 414,508.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,017.16 : 765,923.68 = 300,368.28 : x
  2. Step 2: Convert to fraction form
    555,017.16/765,923.68 = 300,368.28/x
  3. Step 3: Cross multiply
    555,017.16x = 765,923.68 × 300,368.28
  4. Step 4: Simplify right side
    555,017.16x = 230,059,178,372.87
  5. Step 5: Solve for x
    x = 230,059,178,372.87/555,017.16
  6. Step 6: Final answer
    x = 414,508.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.