Home / 288,731.16-432,988.74-99,137.70

Finding the Fourth Proportional to 288,731.16, 432,988.74 and 99,137.70

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Solution

The fourth proportional to 288,731.16, 432,988.74 and 99,137.70 is: 148,669.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,731.16 : 432,988.74 = 99,137.70 : x
  2. Step 2: Convert to fraction form
    288,731.16/432,988.74 = 99,137.70/x
  3. Step 3: Cross multiply
    288,731.16x = 432,988.74 × 99,137.70
  4. Step 4: Simplify right side
    288,731.16x = 42,925,507,809.50
  5. Step 5: Solve for x
    x = 42,925,507,809.50/288,731.16
  6. Step 6: Final answer
    x = 148,669.47

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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.