Home / 278,305,528.78-417,095,141.81-155,478,884.86

Finding the Fourth Proportional to 278,305,528.78, 417,095,141.81 and 155,478,884.86

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Solution

The fourth proportional to 278,305,528.78, 417,095,141.81 and 155,478,884.86 is: 233,015,448.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,305,528.78 : 417,095,141.81 = 155,478,884.86 : x
  2. Step 2: Convert to fraction form
    278,305,528.78/417,095,141.81 = 155,478,884.86/x
  3. Step 3: Cross multiply
    278,305,528.78x = 417,095,141.81 × 155,478,884.86
  4. Step 4: Simplify right side
    278,305,528.78x = 64,849,487,529,142,368
  5. Step 5: Solve for x
    x = 64,849,487,529,142,368/278,305,528.78
  6. Step 6: Final answer
    x = 233,015,448.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.