Home / 282,783.76-390,241.59-155,459.37

Finding the Fourth Proportional to 282,783.76, 390,241.59 and 155,459.37

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Solution

The fourth proportional to 282,783.76, 390,241.59 and 155,459.37 is: 214,533.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,783.76 : 390,241.59 = 155,459.37 : x
  2. Step 2: Convert to fraction form
    282,783.76/390,241.59 = 155,459.37/x
  3. Step 3: Cross multiply
    282,783.76x = 390,241.59 × 155,459.37
  4. Step 4: Simplify right side
    282,783.76x = 60,666,711,729.20
  5. Step 5: Solve for x
    x = 60,666,711,729.20/282,783.76
  6. Step 6: Final answer
    x = 214,533.93

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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.