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Finding the Fourth Proportional to 210,528, 315,846.72 and 62,784

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Solution

The fourth proportional to 210,528, 315,846.72 and 62,784 is: 94,192.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,528 : 315,846.72 = 62,784 : x
  2. Step 2: Convert to fraction form
    210,528/315,846.72 = 62,784/x
  3. Step 3: Cross multiply
    210,528x = 315,846.72 × 62,784
  4. Step 4: Simplify right side
    210,528x = 19,830,120,468.48
  5. Step 5: Solve for x
    x = 19,830,120,468.48/210,528
  6. Step 6: Final answer
    x = 94,192.32

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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.