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Finding the Fourth Proportional to 282,954.56, 390,484.68 and 155,633.50

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Solution

The fourth proportional to 282,954.56, 390,484.68 and 155,633.50 is: 214,778.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,954.56 : 390,484.68 = 155,633.50 : x
  2. Step 2: Convert to fraction form
    282,954.56/390,484.68 = 155,633.50/x
  3. Step 3: Cross multiply
    282,954.56x = 390,484.68 × 155,633.50
  4. Step 4: Simplify right side
    282,954.56x = 60,772,495,492.36
  5. Step 5: Solve for x
    x = 60,772,495,492.36/282,954.56
  6. Step 6: Final answer
    x = 214,778.29

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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.