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Finding the Fourth Proportional to 282,783.08, 390,240.90 and 155,460.84

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Solution

The fourth proportional to 282,783.08, 390,240.90 and 155,460.84 is: 214,536.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,783.08 : 390,240.90 = 155,460.84 : x
  2. Step 2: Convert to fraction form
    282,783.08/390,240.90 = 155,460.84/x
  3. Step 3: Cross multiply
    282,783.08x = 390,240.90 × 155,460.84
  4. Step 4: Simplify right side
    282,783.08x = 60,667,178,116.36
  5. Step 5: Solve for x
    x = 60,667,178,116.36/282,783.08
  6. Step 6: Final answer
    x = 214,536.10

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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.