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Finding the Fourth Proportional to 282,803.79, 390,270.24 and 155,487.45

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Solution

The fourth proportional to 282,803.79, 390,270.24 and 155,487.45 is: 214,573.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,803.79 : 390,270.24 = 155,487.45 : x
  2. Step 2: Convert to fraction form
    282,803.79/390,270.24 = 155,487.45/x
  3. Step 3: Cross multiply
    282,803.79x = 390,270.24 × 155,487.45
  4. Step 4: Simplify right side
    282,803.79x = 60,682,124,428.49
  5. Step 5: Solve for x
    x = 60,682,124,428.49/282,803.79
  6. Step 6: Final answer
    x = 214,573.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.