Finding the Fourth Proportional to 279,038,659.98, 385,070,294.90 and 153,588,173.74
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Solution
The fourth proportional to 279,038,659.98, 385,070,294.90 and 153,588,173.74 is: 211,949,997.75
Step by Step Solution
- Step 1: Write the proportion equation
279,038,659.98 : 385,070,294.90 = 153,588,173.74 : x - Step 2: Convert to fraction form
279,038,659.98/385,070,294.90 = 153,588,173.74/x - Step 3: Cross multiply
279,038,659.98x = 385,070,294.90 × 153,588,173.74 - Step 4: Simplify right side
279,038,659.98x = 59,142,243,355,214,232 - Step 5: Solve for x
x = 59,142,243,355,214,232/279,038,659.98 - Step 6: Final answer
x = 211,949,997.75
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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.