Home / 210,283.08-315,423-52,510.47

Finding the Fourth Proportional to 210,283.08, 315,423 and 52,510.47

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Solution

The fourth proportional to 210,283.08, 315,423 and 52,510.47 is: 78,765.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,283.08 : 315,423 = 52,510.47 : x
  2. Step 2: Convert to fraction form
    210,283.08/315,423 = 52,510.47/x
  3. Step 3: Cross multiply
    210,283.08x = 315,423 × 52,510.47
  4. Step 4: Simplify right side
    210,283.08x = 16,563,009,978.81
  5. Step 5: Solve for x
    x = 16,563,009,978.81/210,283.08
  6. Step 6: Final answer
    x = 78,765.30

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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.