Home / 287,553,038.40-431,329,557.60-178,713,921.60

Finding the Fourth Proportional to 287,553,038.40, 431,329,557.60 and 178,713,921.60

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Solution

The fourth proportional to 287,553,038.40, 431,329,557.60 and 178,713,921.60 is: 268,070,882.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,553,038.40 : 431,329,557.60 = 178,713,921.60 : x
  2. Step 2: Convert to fraction form
    287,553,038.40/431,329,557.60 = 178,713,921.60/x
  3. Step 3: Cross multiply
    287,553,038.40x = 431,329,557.60 × 178,713,921.60
  4. Step 4: Simplify right side
    287,553,038.40x = 77,084,596,740,689,088
  5. Step 5: Solve for x
    x = 77,084,596,740,689,088/287,553,038.40
  6. Step 6: Final answer
    x = 268,070,882.40

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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.