Home / 289,038,971.43-398,872,774.53-156,879,967.50

Finding the Fourth Proportional to 289,038,971.43, 398,872,774.53 and 156,879,967.50

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Solution

The fourth proportional to 289,038,971.43, 398,872,774.53 and 156,879,967.50 is: 216,493,809.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,038,971.43 : 398,872,774.53 = 156,879,967.50 : x
  2. Step 2: Convert to fraction form
    289,038,971.43/398,872,774.53 = 156,879,967.50/x
  3. Step 3: Cross multiply
    289,038,971.43x = 398,872,774.53 × 156,879,967.50
  4. Step 4: Simplify right side
    289,038,971.43x = 62,575,147,904,901,224
  5. Step 5: Solve for x
    x = 62,575,147,904,901,224/289,038,971.43
  6. Step 6: Final answer
    x = 216,493,809.11

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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.