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Finding the Fourth Proportional to 518,521.70, 776,227.35 and 308,051.30

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Solution

The fourth proportional to 518,521.70, 776,227.35 and 308,051.30 is: 461,153.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,521.70 : 776,227.35 = 308,051.30 : x
  2. Step 2: Convert to fraction form
    518,521.70/776,227.35 = 308,051.30/x
  3. Step 3: Cross multiply
    518,521.70x = 776,227.35 × 308,051.30
  4. Step 4: Simplify right side
    518,521.70x = 239,117,844,263.06
  5. Step 5: Solve for x
    x = 239,117,844,263.06/518,521.70
  6. Step 6: Final answer
    x = 461,153.01

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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.