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Finding the Fourth Proportional to 418,345.32, 577,119.36 and 303,371.74

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Solution

The fourth proportional to 418,345.32, 577,119.36 and 303,371.74 is: 418,510.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,345.32 : 577,119.36 = 303,371.74 : x
  2. Step 2: Convert to fraction form
    418,345.32/577,119.36 = 303,371.74/x
  3. Step 3: Cross multiply
    418,345.32x = 577,119.36 × 303,371.74
  4. Step 4: Simplify right side
    418,345.32x = 175,081,704,541.81
  5. Step 5: Solve for x
    x = 175,081,704,541.81/418,345.32
  6. Step 6: Final answer
    x = 418,510.01

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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.