Finding the Fourth Proportional to 257,559,865.60, 386,358,460.80 and 155,103,289.60
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Solution
The fourth proportional to 257,559,865.60, 386,358,460.80 and 155,103,289.60 is: 232,666,172.95
Step by Step Solution
- Step 1: Write the proportion equation
257,559,865.60 : 386,358,460.80 = 155,103,289.60 : x - Step 2: Convert to fraction form
257,559,865.60/386,358,460.80 = 155,103,289.60/x - Step 3: Cross multiply
257,559,865.60x = 386,358,460.80 × 155,103,289.60 - Step 4: Simplify right side
257,559,865.60x = 59,925,468,234,872,648 - Step 5: Solve for x
x = 59,925,468,234,872,648/257,559,865.60 - Step 6: Final answer
x = 232,666,172.95
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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.