Home / 282,783.26-390,240.90-155,458.87

Finding the Fourth Proportional to 282,783.26, 390,240.90 and 155,458.87

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Solution

The fourth proportional to 282,783.26, 390,240.90 and 155,458.87 is: 214,533.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,783.26 : 390,240.90 = 155,458.87 : x
  2. Step 2: Convert to fraction form
    282,783.26/390,240.90 = 155,458.87/x
  3. Step 3: Cross multiply
    282,783.26x = 390,240.90 × 155,458.87
  4. Step 4: Simplify right side
    282,783.26x = 60,666,407,390.58
  5. Step 5: Solve for x
    x = 60,666,407,390.58/282,783.26
  6. Step 6: Final answer
    x = 214,533.23

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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.