Home / 256,909,584.89-354,535,569.25-139,434,915.13

Finding the Fourth Proportional to 256,909,584.89, 354,535,569.25 and 139,434,915.13

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Solution

The fourth proportional to 256,909,584.89, 354,535,569.25 and 139,434,915.13 is: 192,420,368.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,909,584.89 : 354,535,569.25 = 139,434,915.13 : x
  2. Step 2: Convert to fraction form
    256,909,584.89/354,535,569.25 = 139,434,915.13/x
  3. Step 3: Cross multiply
    256,909,584.89x = 354,535,569.25 × 139,434,915.13
  4. Step 4: Simplify right side
    256,909,584.89x = 49,434,637,006,470,136
  5. Step 5: Solve for x
    x = 49,434,637,006,470,136/256,909,584.89
  6. Step 6: Final answer
    x = 192,420,368.54

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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.