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Finding the Fourth Proportional to 288,615.41, 432,987.02 and 99,071.54

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Solution

The fourth proportional to 288,615.41, 432,987.02 and 99,071.54 is: 148,629.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,615.41 : 432,987.02 = 99,071.54 : x
  2. Step 2: Convert to fraction form
    288,615.41/432,987.02 = 99,071.54/x
  3. Step 3: Cross multiply
    288,615.41x = 432,987.02 × 99,071.54
  4. Step 4: Simplify right side
    288,615.41x = 42,896,688,211.12
  5. Step 5: Solve for x
    x = 42,896,688,211.12/288,615.41
  6. Step 6: Final answer
    x = 148,629.24

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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.