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Finding the Fourth Proportional to 288,510.84, 432,816.48 and 139,020.48

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Solution

The fourth proportional to 288,510.84, 432,816.48 and 139,020.48 is: 208,554.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,510.84 : 432,816.48 = 139,020.48 : x
  2. Step 2: Convert to fraction form
    288,510.84/432,816.48 = 139,020.48/x
  3. Step 3: Cross multiply
    288,510.84x = 432,816.48 × 139,020.48
  4. Step 4: Simplify right side
    288,510.84x = 60,170,354,801.51
  5. Step 5: Solve for x
    x = 60,170,354,801.51/288,510.84
  6. Step 6: Final answer
    x = 208,554.92

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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.