Home / 278,931,242.81-384,913,556.21-151,772,446.15

Finding the Fourth Proportional to 278,931,242.81, 384,913,556.21 and 151,772,446.15

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Solution

The fourth proportional to 278,931,242.81, 384,913,556.21 and 151,772,446.15 is: 209,439,686.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,931,242.81 : 384,913,556.21 = 151,772,446.15 : x
  2. Step 2: Convert to fraction form
    278,931,242.81/384,913,556.21 = 151,772,446.15/x
  3. Step 3: Cross multiply
    278,931,242.81x = 384,913,556.21 × 151,772,446.15
  4. Step 4: Simplify right side
    278,931,242.81x = 58,419,271,980,362,656
  5. Step 5: Solve for x
    x = 58,419,271,980,362,656/278,931,242.81
  6. Step 6: Final answer
    x = 209,439,686.26

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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.